1. An all white web page takes more energy to display than an all black web page.
2. Google is an all white web page.
3. Google is probably showing up on one screen or another for an average of 550,000 hours each day.
4. If Google switched from an all white to an all black design, they could save the country $300,000 per year in energy usage.

Though it’s all rough numbers, and the black/white effect might only matter for CRT monitors (and not LCD monitors), the idea that a simple design color change could save thousands of Megawatt-hours per year is definitely something to think about. And you thought DYH’s design was just black to be different.